Machine for installing and removing tires from rims



Sept. 4, 1923. 1,467,122

J. w.. H. SNELL MACHINE FOR INSTALLING AND REMOVING TIRES FROM RIMS Filed March 26 1920 5 Sheets-Sheet 2 Sept. 4, 1923.

J. W. H. SNELL MACHINE FOR INSTALLING AND REMOVING TIRES FROM RIMS Filed March 26 192 5 Sheets-Sheet 5 Sept. 4, 1923.

J. W. H.-SNELL MACHINE F'OR INSTALLING AND REMOVING TIRES FROM RIMS Filed March 26 1920 5 Sheets-Sheet Sept. 4, 1923.

J. W. H. SNELL MACHINE FOR INSTALLING AND REMOVING TIRES FROM RIMS Filed March 26 1920 5 Sheets-Sheet 5 Reishuetl Sept. 4, 1923.

um'nzn STATES PATENI'QFFICE.

"IAIS H. SHELL, QF DEIBDI'I, HICHIGAR.

' IACHIII'IE INSTALLI NG AND BEIMIDVIN'G TIBES E3011 B.IMS.-

.lpplication flled Ia.rch 26, 1920. Serie! R0 368,928.

T0 all wlzom it mag; con'cen:

Be it known that I, Jums W. H. SHELL, citizen of the United States. residin Detroit, county of Wayne, State of ich?- igan, have inventeda eertain new and useful lmprovement in Machines for Instelling "and Remov ing Tire s from Rinus, and declare the following to be a full, elear, and

exact descrip tion of the same, such; as wi ll enable others -skilled in the art l'A) which 1t pevtains to make and use the same, refer- .ence being had to the aceompanying drawings, which form a part of this specification.

My invention relates to a machine for in-. stallng upon vehicle rim s er removin therefrom cushi0n or airless tires encl in btahe usual outet casing of a. pneumati... tu

This machine is designed especially for garage use and its object is to provide means whereby one man may exert a relatively high resure of approximately sixty tons, in er er that a clineher or other; tire may be installed u 11 the rim of a vehicle wheel 01 demount quired.

With the foregoing and other objeijcts in view which will appear as the description g roceeds the invention resides in the comthe details of construetion hereinafter described and claimedit understood that changes may be made in the pnecise embodiment of the invention herein disclosed without depag'ting from the spirit of the same.

In the aceompanying drawings forming part. of this specification Figure 1 is a plan view of the machine showmg a. tire installed upon a clincher nm.

Figure 2 is a vertical eros-secional view throughthe machine showng the pulling hooks, pivoted to the draw-plate, in the position oecu ied when forcing the bead of the tire uner the flange of the wheel rim, and also in d0flted lines the position of the hooks when the work is completed ready for the removal of the rim and tire frm the machine.

Figul"e 8 is en inverted plan view of the drawlate, showin the tangentally arstiiening riand 'the pockets for -receiving the operating rotating the draw-plate. at

therefrom as may" be restanding screw-shaft which serves as a supmation and arrangement of parts and in lever for manually Figure is a vertical c10ss-seetional view throngh the machine showi the pulling hooks engagin the tire for t e purpose of removing the t ire from the rimand in dotted lines the position of the pullinghooks and draw-plate when the tire is forced from the rim.

Figure 5 is a detail plan view-of the demounting rim, shown in section in the pre oed ing view.

Figure 6 is a verticalcrosssotional view through the machine ndicating a sec-tional or divided cm ressmn ring applied. to a. straight side t1re and the manner of installing tines of 'the straight side type upon a suitable rim.

Figures7, 8, 9, 10, 11 and 12 are fragmentary vrtical sectional views through t e "floating table showing the sucoessive steps taken in installing a straight side tire upon a eontinuous rim.

.Referring now to the letters of leference placed upon the drawingsz A, denotes a.base plate. A' is an up porting pedestal for a floating table B,;rotatable on the end of the screw-shaft end having a limited tilting movement thereon.

A denotes a 'suitable rolleror ball 'thrust beaiing onthe end of the scnew shn.ft "A'.

A is.a disc flat. on its underside to adapt it to vest upon the roller or hall thrut bearing, and havin an arc-shaped te te conform to the en of the socket on t e, under side of the floating table B. A is a flange carried by the screw to limit the tilting action of the fleating table.

- C, indi cates a -cireular drawlate provided on its underside with a pluralit of 'ch are integral with the 'tan ental ribs C' extending outwardly m central or hub portion of the floating table. Thehooks E are formed with a camshaped back e, designed to cooperate with an adjustable hinged plate E, bolted to each of the slotted radial arms B. These hinged plates carry rollers E and are dapted to force the hooks inwardly, or toward the rim F of a vehicle wheel resting upon a mounting ring G-grooved on eaeh side as indicated at G' and G to receive rims of different diameters. The ends of the hooks are each provided with short laterally extending are-shaped blades E adapted to bear upon the outer casing H of the tire H lodged therein, to compress the tire that the bead of the oute r casing may enter beneath the flange of the vehicle rim for engagement thereb The floating table is provided with a central recess. B on its upper face to receive the hub portion oftl1e wheel on which the tire is mounted. B" denotes a plurality of upstanding locating piris set in the floating table to properly register the mounting ring G, and to secure the ring against displacement.

t will be assumed that the tire shown in Figure 2 of the draw ing is what is known as a 30" x 31}" or 31" x 4" and in order to put on a 30" x 3" which is of less diameter then the said tires t will be necessary to 10- cate a spacii1g ring not shown under the mounting ring G, so that when the latter is turned over to mounta tire from the ther side of the letter, a proper cam action of the pulling hooksmay be obtained,

'Referring to Eigure 2, I denotes a pilot cone mounted over the wheel rim to guide the tire over the rim. The cone ring fits against the exterior of the rim of the tire and it is also provided with means for engaging the rim interiorly thereof so that the pilot ring will be firmly mounted in position on the rim.

T0 mount a clincher tire on the rim, the mounting ring G is placed upon the floating table, being properly centered and secured against displacement by the locating pins 13". The wheel rim F is then placed in the groove G2 of the ring G, and the pilot cone I mounted on the rim as shown in Figure 2 of the draWings;-the draw-plate C and hooks E, being initially in the position indicated by dotted lines, to admit the ready placement of the wheel rim and tire. The hinged plates E are then swung to the position shown in r'ull lines that the rollers E may cooperate with the camshaped back of the hooks to foroe the latter inwardly upon lowering the draw plate C by the manual operating of the lever D when inserted in one of the several pockets C provided in the plate to receive it. The tire is thus compressed andits bead forced under the flange of the wheel rim. It will be noted that a limited tilting action of the floating table is provided, this is essential for two reasons,firstz in order to avoid the stretching of the bead or clincher ti1es, as it permits the tire to tilt so that certain of the hooks may pull to a greater extent then the others,and upon the table striking the flange A* on the screw shaft A it. is forced back to a horizontal position whereupon the remaining hooks become efiective to force down the tire and thereby complete the operation of mounting the tire upon the rim. Second: it acts as an equalizer causing every hook to perform the same amount of work, regardless of any vulcanized spots in the casing which might otherwisethrow the work on a few of the hooks, thereby causing the machine to operate improperly.

The hooks are shaped at the back with a slow and fast cam so that when the hooks reach a certain position in their operation they will move toward the center of the machine, giving a timed inward feed,one hook tucking the bead under the flange of the clincher rim,-the others automatically following due tothe tilting action of the tablez-all of the hooks operating before the table completes a full revolution to tuck its portion of the tire bead Under the rim,-the job is thus completed.

T0 take ofi a clincher tire I provide a collapsible demounting rim J ,--see F igures 4 and 5,gro0"ed in like manner to the mounting rings, the ring however being relatively wider to of? the rim.

To remove the tire the rim is mounted upon the collapsible demounting'ringJ,- the bead of the tire is then pulled out of the flange on one side through the bperation of the pulling hooks as when mounting the tire. The rim is then turned over on the collapsible rin J and the pulling hooks again placed 1Il position as before. The draw-plate C is then actuated by means of the lever D, thereby pulling the tire downwardly upon the dmounting rim as shown in dotted lines in Figure 4, leaving the empty rim on top of the demounting ring.

The demounting rin is constructed in two parts as shown in F1gure 5, which readi ly falls apart upon lifting it from the body of the machine lezwing the tire free and ready for remounting.

In mounting straight side tires it is neccssary to make a straight vertical pull or press, therefore the hinged plates E are swung back as indicated in Figure 6. and F ig ures 7 to 9, in order that the rolls E of the hinged plate ma not act upon the camface back of.the pulling hooks.

A ring K, preferably constructed in four parts, is first placed upon the tilting table,- the tire L is then laid upon the ring and a provide or pulling the tire similar divided ring K is laid upon the tire as shown in Figure 6 of the drawin These rings are shaped to fit the tire an have a groove K to receive the laterally projecting wings of the pullin hooks.

The draw plate isthen revolvedas before and the tire is thus compressed sufliciently to place the split rim'or ring M,-see F igure 6, in position.

n Figures 7 to 12 are shown what is generally known as a universal rim :In this oase a divided mounting ring U is placed on the floating table and the rim V mounte d thereon as previouslydescribed. A ring W, is now pla oed in position upon the tire, as shown in Figure 9, and the pulling hooks caused to engage the ring, as shown in Figure 10,-compressing the tire; the rim X is then placed in position and the locking ring Y inserted as shown in Figure 11; the tire is then released so it inaylodge beneath the rim; the pulling hooks are then renioved, as shown in Figure 12.

Having thus descr1bedmy invention What I claim is 1. In a machine of the charactcr de scribed, a screW-shaft, means for supporting the shaft, a floating rotatabletable mounted on the end of the shaft, adapted to receive and support a vehicle rim and tire, a vertically movable draw-plate adapted to traverse said shaft and rotatable simultaneously with the said table, a plurality of hooks designed to engage a tire supported upon said tabl, said hooks being 1voted to said draw-plate, whereby upon ra1singor loweingthe latter the hooks ma act upon the tire to install or remove it rom the rim.

2. In a machine ofithe character described, a screw shaft, means for. supporti the shaft, a floating rotatable tble moun upon the end ofthe screw shaft and provided withslots and ada ted to receive and support a vehicle rim an tire, a vertically movable rotatable draw-plate screwed upon said shaft, a plurality of hooks eirtending through the said slots inthe floating rotatable table and ada ted to engage a t1re to install or remove t e s ame ir'om its rim,- said hooks being pivoted to the rotatable drawplate, and means for rotating said draw plate simultaneously with the table.

3. In a machine of .the character described, a screw shaft, a floating rotatable ously, whereby the hooks ma lowered withreferenc'ze to sai floatmg rotatable mounted upon -the-end of said screw -shaft, said table having slots therein, a ver tically movable rotatble draw-plat e screwed upon the shaft, a lurality ofhooks pivoted to the rotatable raw-plateextending upwardlv through said s lots in said floating rotatahle fcable, andmeans for manually rotati1ig the draw-Plabe and table simultanebe raised or table table.

a screw-threaded pedestal, a thrust anti-fricby they may be adapted to monnt or remove a tire supported upon sa-id rim.

5. In a machine of the charaotier described,

a screw-threaded pedestal, arotatable tilt tal and having slots therein, means for limiting the tiltin action of the table,a vertically mov able raw-plate screweduponsaid J pedestal, means for rotatin said drawplate, a plurality of hooks p1voted tosaid dradwlate and extendin' up thron h t he sar they may enfg:.ge a tire to be mounted upon 01 removed om the rim.

6. In a machine of the character descrihed,

a serew shaft, means for supporting the shaft, a rotatable tiltable table mounted on the end of said shaft, said table having slots therein, a plate carried by the shaft to limit the tilting action of the table, a draw-plate screwed upon the shaft, a plurality of pulling hooks pivoted to the drawlate extend-- ing npwadly through the sai .slots in the tiltab e table and having cam-sha d backs,

.a pluralitv ofad'usgable hin p ates bol ted to the tiltab e table, a n rollers journaled in said pllates adapted to traverse the cara-back of t e pulling hooks to 'force the latter inwardly when drawn downwardly thro h the opration of the draw"plate.

7. n a machine of the character described,

a 'screw-shaft, a rotatable tiltable table mounted upon said shaft having radial slotted arms, a draw-plate screwed upon the screw shaft, means for rotating the drawplate, a plurality of (pulling hooks pivoted to the draw platle an respectivelyprojecting throu%h the several slotted a of the ilta ble ta 1e, the backs of sad puil in f porte by each of the arms of the tiltable ghooks. a cam-face, adjustable means sup-' able table mounted on the end of said pedesots in the rotatabe table, w ereby table adapted to act upon the cam-face of the hooks to force the latter inwardly when uired, as the hooks are drawn down wardl by the operation of the draw Plae. 8. a machine of the characte1 desriied, a screw shaft,means for su rting said shaft, a floating rotatable ta e connected to theshaft and adaptedto reoeive and supor-t a vehicle rim and tire, a memberhav- 1ng connectionwith the shaft and movable along the latter and rotatable simultaneously with the table, a plurality of devices 4. In a machine of the charactr described,

pivotally connectedto the said member and III adapted t0 engage a tire supported upon the table whereby upon movement of said member along the shaft the hooks may act upon t1 1e ti1e to install 01 1en10xe it from the run.

9. In a machine of the character described, a screw shaft. means f0r supportng the shaft. 1 rotatable table mounted on the end of the shaft for the reception and support of a vehicle 1n1 and ti1e. a vertically movable draw pla te adapted to traverse said shaft and rotatable simultaneously with the tuble. a plurality of hooks pixotally mounted upon the draw plate and adapted to engage a tre supported upon sad table, and 1neans whereby upon raising 01 lowering the draw plate the hooks a1e constrained to act upon the tire to install 01 remove it from the rim.

10. In a machine of the character descrbed, a screw shaft, means for supporting the shaft, a rotatable tiltable table mounted on the end of the shaft, a vertically momble rotatable draw-plate screwed upon the shaft, stfiening ribsntegral With the body of the draw-plate extendng outwardly at a tangent t0 its hub, a plurality of hooks extending through slots in the 10- tatable tiltable table pivoted to the drawplate, and means f01 rotating the drawplate.

In testimony whereof, I sign this specificatiori in the presence of two wtnesses.

JAMES W. H. SNELL.

\Wtnsses S. E. THOMAS, JOSEPH A. ROSENBERGER. 

